About the RoleWe're building an AI motion design platform and this is our founding engineering hire. You'll work closely with the founders to shape the technical foundation, own end-to-end development, and help scale a product designed to empower millions of users with fast, high-quality animations.
What You'll Do- Partner with the founders to deliver user-centric product solutions from concept to production.
- Own end-to-end development of full-stack features with scalable architecture design.
- Build and optimize agentic LLM systems incorporating tool-calling, multi-step reasoning, and MCP protocols.
- Design comprehensive LLM evaluation frameworks with automated benchmarks, human-in-the-loop validation, and A/B testing.
- Optimize LLM inference performance, cost efficiency, and latency across multiple model architectures.
- Develop a high-performance motion graphics engine.
- Drive architectural decisions that support scalable growth to millions of users.
What We're Looking For- Strong CS fundamentals.
- Hands-on experience building or integrating large language models (LLMs), tool-calling, multi-step reasoning, and MCP protocols.
- Experience designing and implementing LLM evaluation frameworks with automated benchmarks, human-in-the-loop validation, and A/B testing.
- Demonstrated ability to deliver end-to-end full-stack features with scalable architecture.
- Startup/early-stage company experience with an ownership mindset.
- Proficiency with the full tech stack: TypeScript, React.js, Next.js, PostgreSQL, GCP, AWS.
- Proficiency in optimizing LLM inference performance, cost efficiency, and latency across multiple model architectures.
LocationBerlin, Germany (office-based)
